Small bumps when printing snapmaker 2.0

Hi everyone!I’ve been doing tests for a couple of parts that I need.These parts were printed with the same parameters, but now all the pieces have these little bumps (part A) or unevenness, which did not appear before (part B).I already modified the speed parameters, the height in z (it had been giving me problems), the design of the piece and nothing seems to solve it.Maybe it could be moisture in the PLA, but the place where I live is very dry and I have a filament dryer.it's important to mention that the pieces are less resistant than beforeDo you have any idea how to solve it?, thanks.